Which of the following is NOT an example of mechanical control?

Mechanical control methods involve physical actions to manage pest populations rather than the use of chemicals. This is typically aimed at physically preventing pests from thriving or directly reducing their numbers.

Water traps, for example, are devices that capture mosquitoes by using water as a lure, which is a direct physical method of removing them from the environment. Physical barriers, such as screens or nets, prevent mosquitoes from entering a designated area, effectively blocking their access. Larval habitat modifications involve altering the environment to make it less conducive for mosquito breeding, such as eliminating standing water where mosquitoes lay eggs.

Aerosol bombs, on the other hand, are a form of chemical control. They release insecticides in aerosol form to kill mosquitoes and other pests. This approach relies on chemicals rather than mechanical means, making it distinct from the other choices, which utilize physical methods to control mosquito populations. Therefore, identifying aerosol bombs as not being an example of mechanical control is correct, as it represents a chemical intervention instead.